Tile-machine.



J. B. ENGSTROM.

v TILE MACHINE.

APPLICATION H'LED JUNE 19. ms.

Patented Mar. 19, 1918.

INVENTOR UNITED STATES PATENT OFFICE.

JACOB B. ENGSTROM, OF MANCHESTER, IOWA TILE-MACHINE.

To all whom it may concern:

Be it known that I, JACOB B. ENGsTRoM, a citizen of the United States, residing at Manchester, in the county .of Delaware and State of Iowa, have invented certain new and useful Improvements in Tile-Machines, of which the following is a specification.

This invention relates to machines for making cement tiles or. pipes, and it has for one of its objects the provision of an improved machine of this character which is operated by power and which comprises a packer movable vertically relatively to the mold in which thetile is to be formed, in opposite directions by a single member which is constantly driven in one direction.

The invention has, furthermore, for its object the provision of improved means whereby the packer-carrying member may be alternately brought into engagement witha pair of nutsadapted to raise and lower said carrier, each of these nuts being made in halves to be opened or closed, as the case may be, by the controlling member of the machine to be manipulated by the w operator.

The invention has alsofor its objects the provision of improved means whereby the packer-carrying member, after it has been raised out of the mold for a predetermined distance, will be held in such raised position any further rising movement of the carrier as controlled by the raising nut being stopped.

Further objects of the invention will hereinafter appear and be particularly defined in the claims.

' The invention has been clearly illustrated in the accompanying drawings in which similar characters denote similar parts and in which Figurel is a side view of the tile machine embodying my invention, I

Fig. 2 is a frontview thereof, and

Fig. 3 is a top view of the carrier-retaining device whereby the same is held in its raised position.

The present machine. constitutes an improvement of that shown in my U. S. Patent 1,022,933 of April 9, 1912, to which reference may be had.

Referring to the drawings, 10 denotes a standard or frame having a pair of bearings 11 and 12 in which is journaled a shaft l3 provided with a pulley 14 to which power the pair of fingers or jaws 22 and 23 (see Specification of Letters Patent. Patented lIal. 19, 1918 Application filed June 19, 1916. Serial No. 104,423.

machine and having at its lower end a packer 19 which may be of any suitable construction. I 7

A hopperor table 20 is attached to the standard 10 of the machine and has at its underside a flange 21 which engages and locates the upper end of the mold M in i which the tile is to be formed.

In the drawings the packer-carrying member or rod 18 is shown in its hi hest position, thepacker l9 being clear 0 the mold and the table, and it is thus held by Fig. 3) which cross each other in the manner illustrated and-are pivoted on the stud 24, a spring serving to hold the jaws, normally together. By referring to Figs. 1 and 2 it will be noted that the upper end of the packer-carrying rod 18 is provided with a knob 26 which, when the packer ascends, forces its way between the arms 22 and 23 which, immediately after the passage of said head, will again be contracted by the spring 25 and thus engage the under side of said head. These aws are supported on a bracket 27 secured to an auxiliary frame 28 which may beattached to the standard 10 in any suitable manner.

From the foregoing it will be understood that the pulley 14 rotates the carrier rod 18 constantly in one direction, and, in order s the screw threads 29 beingadapted to be 100 engaged by a nut 31which consists of a pair of halves pivoted at 32 and 33 re-. spectively on a bracket 34 secured to the auxiliary frame 28.

In a like manner the right hand screw 105 thread 30 is adapted to be engaged by a nut 35 which also consists of a pair of halves pivoted on a bracket 36 secured to the frame 28, as above. Each bracket has lugs 37 pro-,

jecting' sidewise' 'inovenient of 119 nut sections, and, when the latter are engaged, to act as strengthening members in keeping the nuts against vertical movement.

The means for controlling the engagement of the nuts 31 and 35 respectively comprise a single member or bar 38 disposed in front of the nuts as shown, and provided with a slot 39 (see Fig. 2) whereby the same is guided for vertical movement.- The shifting bar 38 has secured thereto a cam plate 40 provided with inclined slots 4:1 to engage and'control a pair of pins 42 which project forwardly from each nut section 31. In Fig. 2 the pins 12 are at the greatest distance from each other so that therefore the nut 31 is open or disengaged from the screw thread 29.

When the bar is moved upwardly, the cam slots 41 will contract the pins 4E2 and close the nut 31 so that therefore the packer carrier will, by its rotation in the nut, be

moved downwardly. T he upward movement of the bar 38 also results in opening the spring-closed retaining fingers 22- and 23 above mentioned, the bar having its upper end wedge-shaped, as at 38 so that it can readily force its way between the free ends of said fingers.

The right hand screw thread 30 is, as before stated, adapted to be engaged by the nut section 35, each of which has one or more pins 45 disposed in cam slots &6 on a cam plate 47 which latter is also secured to the bar 38 before mentioned. The organization of the cam slots has opened the nut 31, the lower cam plate 47 has closed the nut 35, and vice versa. The device whereby the bar 38 is shifted from its uppermost to its lowermost position and vice versa consists of a lever formed preferably of three parts, namely a pair of outer sections 50 straddling withv their rear ends the auxiliary frame and pivoted thereto at 51. The forward ends of the side members 50' are brought together to receive between them the third member 52. thereof, which is provided with a handle 53 and the upper portion of which is riveted to the side members, 50 and also has a center prong 5e disposed within an aperture formed in the bar 38. Movement of the handle 53 in the direction of arrow a will result in raising the bar 38 and thus open the nut 35, while at the same time.

the upper nut, 31 will be simultaneously closed and therefore produce the downward travel of the packer rod.

When this rod has reached its lowermost position, the nut 31 ceases to be elfective for the reason that the rod 30 is reduced in size in its uppermost portion 54 immediately below knob 26, while the other nut 35 will be in position to; engage thread 30 to raise the rod during its rotation.

Changes may be made in the particular construction and in. the orgaIfizafiim of the propelling said carrier in one direction,

means for propelling said carrier in the opposite direction upon its release from the first-named propelling means, and a springpressed finger adapted to engage the upper end of the carrier for holding the same against movement toward the mold support during its disengagement from one of said propelling devices.

2. A tile machme comprlsing a mold support, a packer, a vertically movable carrier therefor having at its upper end a projecting head, means for raising said carrier, and means engagingthe under side of said head for holding said carrier in its raised position.

3. A tile machine comprising a mold support, a packer, a vertically movable carrier therefor having at its upper end a projecting head, means for raising said carrier, and a pair of spring-pressed fingers engaging the under side of said head for holding said carrier in its raised position.

4. A tile machine comprising a mold support, a vertically movable packer-carrier, means for moving the same in opposite directions, means for retaining said carrier in its raised position subsequently to its disen- 5. A tile machine comprising a mold support, a vertically-movable packer-carrier, independent means for raising and lowering said carrier, means for retaining said carrier against downward movement, and a device for controlling the operation of said raising means and also that of the holding means.

6. A tile machine comprising a mold support, a packer-carrier, means for raising said carrier to a predetermined position, means for retaining said carrier in such raised position, and means for releasing the raising means and also the retaining means from the carrier to permit downward movement of the latter.

7 A tile machine comprising a mold support, a packer-carrier, means for raising said carrier to a predetermined position, means for retaining said carriers in such raised position, and a bar movable longitudinally of the carrier for releasing the" raising means and also the retaining; means from the carrier to permit downward movement of the. latter;

8; A tile machine comprising a mold sup thereof provided with screw threads, a split nut adapted to engage said screw threads to raise said carrier to a predetermined position, means for retaining said carrier in such raised position, and a bar movable longitudinally of the carrier for opening said split nut and simultaneously releasing the retaining means from the carrier to permitdownward movement of the latter.

9. A tile machine comprising a mold support, a packer-carrier having a portion thereof provided with screw threads, a split nut adapted to engage said screw threads to raise said carrier to a predetermined position, each nut section having a protecting pin, means for retaining said carrier in such raised position, a bar movable longitudinally of the carrier for releasing the retaining means, and a cam plate carried by said bar and engaging said projecting pins to open pin, a bar movable longitudinally of the carrier and having a pair of cam plates in engagement with said pins respectively, said cam plates being adapted to close one nut and simultaneously open the other.

In testimony whereof I afiix my signature in presence of two witnesses.

JACOB B. ENGSTROM.

Witnesses: v

H. D. MACDONALD, V. L. ALLEN.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patent,

Washington, D. 0. 

